#!encoding:utf-8

import random
new_l = []
with open('zbkq.txt', 'r', encoding='utf-8') as f:
    lines = f.readlines()

for l in lines:
    if '\n' != l:
        new_l.append(list(l))
for i in range(1,len(new_l)+4, 4):
    if i != 1:
        print(''.join(random.choice(new_l[(i-4):i])))
